<!DOCTYPE html>
<html>

<head>

  <meta charset="UTF-8">

  <title>儿童节快乐</title>

    <link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />

</head>

<body>

  <label class="button"><input type="checkbox"><span></span><span></span></input></label>

  <script src="js/index.js"></script>

</body>

</html>